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Open Access Original Research

Energy Storage and Installed Wind Capacity Requirements for the Substitution of Fossil Fuels in the Electricity Generation Sector

by

Efstathios Michaelides

Received: 19 April 2021; Published: 10 September 2021; doi: 10.21926/jept.2103040

Abstract

The impending adverse effects of Global Climate Change encourages the substitution of fossil fuels with non-carbon sources for electricity generation. However, while fossil fuel power plants may generate electric power at demand, the most abundant renewable energy sources–wind and solar– [...]

21 109

Open Access Research Article

GIS-based MCDM Approach for Wind Farm Site Selection - A Case Study

by

Elissavet Feloni and

Evgenia Karandinaki

Received: 08 May 2021; Published: 17 August 2021; doi: 10.21926/jept.2103039

Abstract

The objective of this study is the development and implementation of a geographic information system (GIS)-based methodology to determine suitable sites for wind farms by using multicriteria decision making (MCDM) techniques. Many eligibility criteria are considered in this approach, suc [...]

66 219

Open Access Original Research

New Electrocatalysts Prepared by Co-Sputter Deposition for the Direct Oxidation of Methanol

by

Dan Fang and

Sri Narayan

Received: 25 May 2021; Published: 13 August 2021; doi: 10.21926/jept.2103038

Abstract

Direct methanol oxidation catalysts Pt_1-x-Ta_x (0<x<1) were prepared using co-sputter deposition. Characterization of these thin film catalysts was performed using scanning electron microscopy (SEM), energy dispersive X-ray (EDX), X-ray Diff [...]

72 232

Open Access Original Research

A Highly-efficiency Position Sensorless Electric Vehicle Synchronous Reluctance Motor Drive

by

Chang-Ming Liaw ,

Ganisetti Vijay Kumar and

Min-Ze Lu

Received: 02 May 2021; Published: 11 August 2021; doi: 10.21926/jept.2103037

Abstract

The development of high-efficiency motor drives for various applications is important in the industry 4.0 era, especially for their extensive application to electric vehicles (EVs). In this study, a position sensorless EV synchronous reluctance motor (SynRM) drive has been developed, whi [...]

64 217

Open Access Research Article

Maintenance Optimization of Wind Turbines Using Weather-Dependent Equivalent Age Model

by

Ali Aldubaisi and

Jorge Valenzuela

Received: 26 April 2021; Published: 04 August 2021; doi: 10.21926/jept.2103036

Abstract

Aging models are important input into wind farm maintenance and financial viability models. Aging of wind turbines depends on many factors, including both ambient and usage conditions. This paper presents a virtual age based maintenance model for wind turbines considering the effect of w [...]

97 287

Open Access Original Research

A Comparative Study of Structural, Optical and Electrical Properties of Fe-ZnO Nanoparticles Synthesized by Precipitation and Microwave Method for Photovoltaic Applications

by

Ganga Neupane ,

Amrit Kaphle ,

David N. Mcllroy ,

Elena Echeverria ,

Prasanna Sankaran and

Parameswar Hari

Received: 12 May 2021; Published: 04 August 2021; doi: 10.21926/jept.2103035

Abstract

Iron doped ZnO (Fe-ZnO) nanoparticles were synthesized using two techniques that are economical as well as scalable to yield tunable properties of nanoparticles for facilitating down conversion in an absorbing layer of a solar cell. To evaluate the suitability of Fe-ZnO nanoparticles pre [...]

93 303

Open Access Review

EnergyPlus-Towards the Selection of Right Simulation Tool for Building Energy and Power Systems Research

by

Ali Syed

Received: 05 February 2021; Published: 19 July 2021; doi: 10.21926/jept.2103034

Abstract

This article offers the summary of detailed literature review on the state of the art of simulation tools for building energy and power system research. The fundamental capabilities required for building energy and power system analysis tools are outlined. A comparative review of differe [...]

122 332

Open Access Review

A Review on the Application of the MPC Technology in Wind Power Control of Wind Farms

by

Chenchang Li ,

Jianqiang Hu ,

Jie Yu ,

Jieci Xue ,

Runze Yang ,

Bo Sun and

Yijie Fu

Received: 23 April 2021; Published: 15 July 2021; doi: 10.21926/jept.2103033

Abstract

Due to the uncertainty and volatility of wind speed, its natural output power also exhibits strong volatility. In order to avoid the negative effects of the excessive fluctuation of the output power of wind turbines in the wind farm and the power grid, it is very important to accurately [...]

182 331

Open Access Research Article

Synthetical Optimal Design for Passive-Damped LCL Filters in Islanded AC Microgrid

by

Xiuhui Tang ,

Daming Zhang and

Hua Chai

Received: 19 May 2021; Published: 08 July 2021; doi: 10.21926/jept.2103032

Abstract

In AC microgrid systems, technical issues resulting from the power control effect are the power control method efficiency and the filter resonance since voltage-frequency interference and filtering resonance may cause significant control input reduction and oscillation. A simple and robu [...]

122 336

Open Access Original Research

Measurements of Overwater Gust Factor from Near Surface to Beyond Common Hub Height: A Case Study

by

Shih-Ang Hsu

Received: 13 December 2020; Published: 06 July 2021; doi: 10.21926/jept.2103031

Abstract

In September 2020 Hurricane Sally affected the north central Gulf of Mexico. Making use of the anemometers data available at 4 oil rigs over the affected region, it is found that, when the atmospheric stability was near-neutral, the gust factor (G) decreases linearly [...]

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